PT-2026-47340 · Openbullet · Openbullet2

Maksim Rogov + 1 · Published 2026-06-08 · Updated 2026-06-08 · CVE-2026-25555

NVD

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

OpenBullet2 through version 0.3.2 contains an authentication bypass vulnerability in the API key authentication middleware that allows unauthenticated attackers to gain admin access by supplying an empty X-Api-Key header value. Attackers can exploit the middleware's comparison of the supplied header against an empty AdminApiKey default string to access the admin console and all API endpoints without valid credentials.

Exploit

Fix

Weakness Enumeration

CWE-305

Related Identifiers

CVE-2026-25555

Affected Products

Openbullet2

References · 3

• 🔥 https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-25555 · Security Note
• https://vulncheck.com/advisories/openbullet2-authentication-bypass-via-x-api-key-header · Note